Rotary motor



1932' A. KOLKO R TARY MOTOR Filed Oct. 20, 1928 3 Sheets-Sheet 1 l/VVEA/TOR .Hrorz K ko A l lok/vam Aug. 30, 1932 r OLKO 1,874,308

ROTARY MOTOR Filed Oct. '20, 1928 s Sheets-Sheet 2 p. E E

Fig 3 IN VE N TOR Jlrorz Jlf'oZ/Uo ATTORNEYS Aug. 30, 1932. A. KOLKO ROTARY MOTOR Filed Oct. 20, 1928 3 Sheets-Sheet 3 INVENTOR JZT'an. /fb[ /L'() ATTORNEYS cally centered in the Patented Aug. 30, 1932 PATENT OFFICE ARON KOLKO, OF COLOMBES, FRANCE norm? moron Application filed October 20, 1928, Serial No. 318,736,

The present invention relates to a rotary motor of the radial type which is adapted for use as a pump or compressor.

The said motor comprises an annular working chamber whose cross section is preferably square or rectangular, having sharp angles, which is divided into com artments of variable volume by movable pistons or groups 0 pistons-of corresponding section which are alternately secured to drums or sets of drums connected with the driving shaft by means of rollers or sets of rollers, the number of said compartments, as well as the kinematic con-' nection, being such opposite compartments will operate in the same stroke of the cycle, for the following purposes:

1. To equilibrate the efforts of vacuum or pressure which act towards or from the centre, so that the set of pistons may be automatimain frame without exercising pressure upon the said frame or upon the shaft, or upon the bearings of the sa d shaft. A

2. To obtain a 'owerefiort or a load efiort operating by a ower couple, the reaction of the power transmitting mechanism also operating by a power couple. The said mechanism may be disposed in a plane situated at a distance from the plane-in which the power couple is reversng forces or lateral efforts, and without overhung arrangement, and in this manner I am enabled to provide fluidtight conditions, to increase the mechanical efliciency and to reduce the wear of the apparatus.

The appended drawings show a constructional form of the motor according to the .in-

vention.

Figs. 1, 2 and 3 are respectively a cross section, an axial section and an external view of the motor,

Fig. 4 shows the parts of Fig. 1 in another position,

Figs. 4 4", 4 and 4 are detail mirrors showing the different positions the rollers and cam assume in the operation of the motor,

Figs. 5 and 6 are respectively an elevational view and an axial sectlon on the line VI-VI that the diametricallyexercised, without producing any and in mnceioctober 81, 1927.

of Fig. 5 of a drum cooperating with the pistons Fig. i is a section on the line VII-VII of Fig. 5, p

ig. 8 is an elevational view with a partial section of the driving shaft,

Fi s. 9 and 10 are respective sections on the f lines XIX and X-X of Fig. 8,

Fi 11 is a partial section on the line XI- I of Fig. 9, A

Fig. 12 is a detail of the cam.

The motor comprises an annular chamber for compression, explosion and expansion, consisting oftwo lateral cheeks 1 and 2 and an external cylindrical wall 3. The internal 65 wall is formed by two overlapping drums 4 and 5. The lateral walls of the cheeks 1-2 constitute the working chamber, and are suitably formed by grin ing, as also the corresponding cheeks 7-8 of the drums 4'-5, in such manner as to-assure the contact between the said checks 7 and 8 and the cheeks 1 and 2 so as to afford fluidtight conditions for the saidworking chamber. Each'of the drums 4-5 is rovided with 7 a plurality of pistons arrange in pairs, four pairs bein shown in the drawings. The pistons a an I; of each pair are situated at the ends of the 180 degree diameters of the corresponding drum, said drum by means of the pins 10 (Figs. 1 and 2), thus providing for the separate trimming, to a very exact degree, of the said drums and pistons, whereby the latter may be accurately manufactured with sharp edges both in the projections and in the recesses. Each piston 9 is mounted on the correspondin drum with the interposition of ,a very thin strip which provides for the necessary play between the said piston and the adjacent drum, upon each side of the drums 4' and 5 are mounted suitable packing members 11 (Fig. 6), also disposed on the external face which cooperates with the lateral check of the motor, and on the internal face co- 5' operating with the second drum.

Each piston consists of assembled flat members which form a box or cell of uare cross section as shown in Fig. 2 having s arp external angles which fit exactly into the and are secured to the 80 diametrically haust ports 23 and 24, and

said working chamber without any play as concerns the said chamber or the pistons, as shown in Fig. 2, thus affording fluidtight conditions which conduce to the proper functioning of the engine.

In this manner each piston is made an elongated chamber, its length being in the direction of its motion thus reducing the inoperative weight, and this chamber is closed by covers which do not extend as far as the said working chamber.

Each of the drums 4 and 5 has, at suitable points, the recesses 12 (Figs. 5 and 7) receiving the axles 13 of the rollers 14 and 14 adapted to make contact with the rollers 15. Each of the said rollers is mounted on an axle 15a (Fig. 2) upon which are mounted by ball bearings the rollers 30 in contact with the lateral walls of the recesses 16 (Figs. 9 and 10) formed in the ring 17 (Figs. 8 and 9) secured to the driving shaft 18.

In the interior of the ring 17 is formed a recess 19 (Fig. 8) cooperating with a cam 20 having the form shown in Figs. 1 and 12.

1 The periphery of said cam forms a roller track for the rollers 15 disposed in the shaft.

In the present form of construction which represents a motor of the double-acting type, the working chamber is provided with the opposite admission ports 21-22 and with diametrically opposite exwith the sparking plugs 25 and 26. The admission conduit 27 and exhaust conduit 28 (Fig. 3) are provided upon the outer face of the motor.

The operation is as follows:

Considering a pair of pistons w-b which are respectively connected with the rollers 14a and 14?): said rollers 14a and 14b freely rotating on their studs 13, and the compression having come to an end, the pistons a--b are in the position of Fig. 4 quite near each other. The spark taking place at the spark ing plug 26, the compressed explosive mixture located in the explosion chamber 1 ex plodes and violently acts, separating pistons ab as shown by the arrows.' The roller 14a being displayed in the direction of the arrow on the piston a and roller 14 being displaced in the direction of the arrow on the piston I), both rollers 14a and 14b exert a violent pressure on roller 15 and presses the same toward the shaft 18. Owing to the fact however that said roller 15 contacts with the face 29 of the stationary cam 20, said roller 15 is compelled to roll along said face and consequently to push the part of the flange 17 rigid with the shaft 18 in the direction of arrow F, thus compelling said shaft 18, together with the drums 45 and the corresponding pistons to rotate in the direction of the arrow F.

The said, pistons a-b are thus spaced apart by the pressure while at the same time they are rotating in the direction of arrow F and the corresponding rollers 14a14b are coming nearer of each other and are housing on the roller 15 which owing to the rollers 30 engaging the recesses 16 of the flange 17 compels the rotation of said flange and shaft 18.

Figure 4 shows the position of parts during the expansion stroke of the cycle.

In Figure 4a which shows the end of the expansion stroke, the chamber 1 has attained the maximum of its capacity and the group of movable parts having rotated about a quartor of a rotation, the roller 15 arrives on the depressed part 29 of cam 20 and the rollers 14a and 145 no longer tend to push inwards said roller 15.

From the position of Fig. 4a pistons a-b are moving towards each other while performing a movement of rotation around shaft 18, while the roller 15, rolling along cam 20 spaces apart rollers 14a and 14b and-comes into the position of Fig. on the projection of said cam 20. Y

The movement of parts is going on while pistons all-b have brought chamber 1 in front of the inlet opening 21, said pistons are moving apart for the admission of fuel, Fig. 4c and said pistons are again brought towards each other for the compression stroke while the roller 15 leaves the second depression 29 of cam 20 Fig. 4c and comes on the projection of said, cam in the position shown in Fig. 4d, the chambers 1 have then a diametrically opposed position from that shown in Fig. 1 is ready for a. new explosion and the cycle described takes place again.

As shown in Fig. 1, the impulse takes place at two diametrically opposite points in the two chambers 1 adapted for the explosion, and it continues in the expansion chambers 11. The exhaust takes place through the ports 23-24 and the admission through the ports 21-22.

The surfaces in contact may be made fluidtight by packing members consisting of cork in the natural state or impregnated with a composition having fish glue as a base, such members being placed in suitable slots formed in the paddles and also in slots in the cheeks of the said drums.

Due to the aforesaid arrangement, the radial pressures which are exercised in the different compartments of the working chamber during the functioning of the motor, that is respectively in the chambers III for the position shown in Fig. 1, will be mutually equilibrated, thus obviating all overhung construction and all irregular wear of the parts, thus affording a perfect equilibrium as regards the functioning, sothat the operation will be quite regular.

The several parts of the apparatus may consist of any suitable material, and may be of any desired size and shape. I prefer to secure fluidtight conditions by the use of elastic packing for which cork may be employed to advantage.

The roller device may be arranged in any other suitable manner, but I prefer to employ a rolling friction as herein described, instead of a sliding friction.

The central cam 20 may comprise a device by which its position can be changed, which device is provided with controlling means for varying the flow of the fluids when in operation. The motor ma be made reversible by changing the positlon of the cam and by reversing the position or the function of the admission and discharge'ports. I

The said invention is applicable to the production of power for all purposes, as well as for. the delivery or the compression of all gases or liquids, whether elastic or not.

What I claim is:

1. In a rotary motor, an annular chamber, a plurality of pairs of pistons in the chamber, a pair of rollers for each pair of pistons, means connecting each pair of the rollers with the pistons, a third roller in operative engagement with each pair of rollers, a shaft I and means cooperating with the third rollers and the pairs of rollers, whereby the shaft will be rotated by the pistons.

2. In a rotary motor, an annular chamber having an inner movable wall, a plurality of pairs of pistons in the chamber, a set of rollers for each pair of pistons, a shaft, a cam, a recessed flange on the shaft with which one of the rollers engage, and means connecting two of the rollers with the inner wall of the chamber, two rollers engaging a third roller of the set to force it inwardly into engagement with the cams, the last named roller engaging said recessed flange.

3. In a rotary motor, an annular chamber, movable members forming the inner wall of the chamber, a plurality of pairs of pistons in the chamber, a set of rollers for each pair of pistons, a shaft, a cam having concave faces, a flange on the shaft and having a plurality of peripheral recesses with which one of the rollers of each set engage, and means connecting two of the rollers of the set with the movable members, said two rollers of each set engaging the first named roller to force it into engagement with the cam.

In testimony whereof I have hereunto set my hand at Paris this sixth day of October,

ARON KOLKO. 

